Hi, I had a similar problem with some very light spots. The trick is not to let the blobs of water dry on the wings if possible. I wasn't brave/skilled enough to sand and add lacquer. As Stu and Scott said above, some heat helped (hairdryer if you don't have a heat gun) and then I had great results with the Wood Silk polish. Had biblical rain on the way to a trackday at Brands Hatch and rain in the morning at the track as well. Even with leaving the water on the wings i didn't have any marks after that. Just needs to be applied every so often to keep it topped up. Good luck! Tom